Question

what is the product of - (x+3) (x+7)
Use identity - (x^2 (a+b)x+ab)​

Answer 1

Step-by-step explanation:

(x+3)(x+7)=x^2+(7+3)x+(7×3)

=x^2+10x+21

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Answer 2

Given,

The expression: (x+3)(x+7)

To find,

The product of the given expression using the identity.

Solution,

The product of (x+3)(x+7) will be (x²+10x+21).

According to the question,

The expression: (x+3)(x+7)

Now, we have to solve it using the following identity:

(x+a) (x+b) = x²+(a+b)x+ab

In this case, x = x, a = 3 and b = 7.

Using this identity:

(x+3)(x+7)

(x)²+(3+7)x+(3)(7)

x²+10x+21

Hence, the product of (x+3)(x+7) is (x²+10x+21).